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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CAROLYN MARIE MAYER APRN, CNP
NPI 1073023263
Nurse Practitioner in Orland Park, IL

Active since October 03, 2017PECOS EnrolledAccepts Medicare Assignment
15300 WEST AVE STE 108, ORLAND PARK, IL 60462(708) 226-2318(708) 226-2319 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, Jul 12, 2023, Aug 25, 2021 and 2 more (5 updates tracked since 2018).

About Carolyn Marie Mayer Aprn, Cnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CAROLYN MARIE MAYER APRN, CNP (NPI 1073023263) is an individual nurse practitioner in Orland Park, Illinois, licensed in Illinois (209.016666) and active in the NPI registry since October 2017. She is enrolled in Medicare PECOS, is affiliated with Palos Community Hospital, and is a graduate of University Of Cincinnati College Of Medicine (2017).

NPPES Registry Identity

NPI1073023263
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameCAROLYN MARIE MAYERCredential: APRN, CNP
Location Address15300 WEST AVE STE 108Orland Park, IL 60462-4685
Mailing Address15300 West Ave Ste 108Orland Park, IL 60462-4685 · (708) 226-2318 · Fax (708) 226-2319
Phone(708) 226-2318
Fax(708) 226-2319
Sole ProprietorNo
Medical School CMSUniversity Of Cincinnati College Of MedicineGraduated 2017
Enumeration DateOctober 3, 2017
Last NPPES UpdateSeptember 29, 20265 updates tracked since enumeration
NPPES CertifiedMarch 14, 2024
✔ NPI 1073023263 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in IL · 209.016666
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
15300 WEST AVE STE 108, Orland Park, IL 60462
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Carolyn Marie Mayer Aprn, Cnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID42579351
PECOS Enrollment IDI20180112000960
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Carolyn Mayer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dupage Medical Group Ltd
17 mi
Multi-Specialty
1100 W 31ST ST, STE 300
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 184 clinicians in this Medicare group
NPI 1801833983 (630) 469-9200
The University Of Chicago Medical Center
18 mi
General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 635 clinicians in this Medicare group
NPI 1033218128 (773) 702-1530
Northwestern Medical Faculty Foundation
36 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
497 services191 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
26 services26 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
11 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Palos Community Hospital

Acute Care Hospitals · Palos Heights, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140062
Location12251 South 80th AvenuePalos Heights, IL 60463 · Cook County
Emergency services Birthing friendly

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140242
Location25 North Winfield RoadWinfield, IL 60190 · Du Page County
Emergency services Birthing friendly

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140281
Location251 E Huron StChicago, IL 60611 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60462 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LAUREN GESELL APRN, CNP
Nurse Practitioner
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318
CHAD BARNES
Surgery (Surgical Oncology)
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318
CHELSEY HICKEY APRN, CNP
Nurse Practitioner
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318
MEGHAN RENEE HARRISON MSN, APRN, FNP-BC
Nurse Practitioner (Family)
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318
KRISTEN ANN RUSH PA-C
Physician Assistant
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318
KATHERINE WHITED RD, LDN
Dietitian, Registered
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318
RAHUL KRISHNAN MD
Obstetrics & Gynecology
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318
AMY MARGARET GREENE LCSW
Social Worker (Clinical)
15300 WEST AVE STE 108
ORLAND PARK, IL 60462
Cook County (708) 226-2318

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Carolyn Mayer's NPI number?

The NPI number for Carolyn Mayer is 1073023263. It was assigned to this individual provider in the NPPES registry on October 3, 2017.

Where is Carolyn Mayer located?

Carolyn Mayer practices at 15300 West Ave Ste 108, Orland Park, IL 60462. The listed phone number is (708) 226-2318.

What is Carolyn Mayer's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Carolyn Mayer enrolled in Medicare?

Yes. Carolyn Mayer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Carolyn Mayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carolyn Mayer reassigns Medicare benefits to 3 organizations: Dupage Medical Group Ltd (Downers Grove, IL), The University Of Chicago Medical Center (Chicago, IL) and Northwestern Medical Faculty Foundation (Carol Stream, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Carolyn Mayer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Carolyn Mayer accept?

Health plans from Oscar Health list Carolyn Mayer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Carolyn Mayer affiliated with any hospitals?

According to CMS data, Carolyn Mayer is affiliated with Palos Community Hospital, Northwestern Medicine Central Dupage Hospital and Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Carolyn Mayer was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.